Yay, glad to have this here. It's pretty much what I learned to do way back in graphics processing for "ease of converting pencil drawings to black and white" way back when bandwidth mattered so much that you wanted one-bit color if you could manage it.
Nah, it's cool, dude. I still rage at people saving (blurry) photos of drawings in PNG "so it doesn't loose any quality". Yay for 7,5mb files. Saving anything past 1mb still makes me uncomfortable.
Link
Phantom-Cat
This will help me out a lot. Thank you!